The Washer,flat, cataloged under National Stock Number 5310-01-596-3859, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Jcb Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-596-3859 |
| Primary Part Number | 1411/0001Z |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Jcb Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Hardness Rating | 40.0 ROCKWELL B NOMINAL |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.281 INCHES NOMINAL IN |
| Thickness | 0.050 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1411/0001Z PRIMARY | Jcb Inc. (USA) |
| 94744A240 | Mcmaster-Carr Supply Co (USA) |
| 94744A240 | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-596-3859 is a Washer,flat, manufactured by Jcb Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-596-3859 has 3 manufacturer part numbers on file: 1411/0001Z (Jcb Inc.), 94744A240 (Mcmaster-Carr Supply Co), 94744A240 (Mcmaster-Carr Supply Co).
Key specifications for 1411/0001Z: Overall Diameter: 0.500 INCHES NOMINAL IN; Hardness Rating: 40.0 ROCKWELL B NOMINAL; Cross-Sectional Shape Style: BLANK RECTANGULAR; Special Features: FOR 0.250 SCREW SIZE. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.